/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/reducercommutativity/max05-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:13:11,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:13:11,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:13:11,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:13:11,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:13:11,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:13:11,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:13:11,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:13:11,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:13:11,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:13:11,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:13:11,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:13:11,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:13:11,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:13:11,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:13:11,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:13:11,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:13:11,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:13:11,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:13:11,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:13:11,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:13:11,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:13:11,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:13:11,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:13:11,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:13:11,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:13:11,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:13:11,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:13:11,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:13:11,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:13:11,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:13:11,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:13:11,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:13:11,114 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:13:11,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:13:11,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:13:11,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:13:11,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:13:11,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:13:11,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:13:11,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:13:11,122 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 12:13:11,176 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:13:11,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:13:11,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:13:11,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:13:11,179 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:13:11,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:13:11,181 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:13:11,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:13:11,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:13:11,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:13:11,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:13:11,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:13:11,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:13:11,184 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:13:11,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:13:11,185 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:13:11,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:13:11,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:13:11,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:13:11,186 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:13:11,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:13:11,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:13:11,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:13:11,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:13:11,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:13:11,188 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:13:11,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:13:11,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:13:11,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:13:11,189 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:13:11,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:13:11,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:13:11,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:13:11,724 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:13:11,725 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:13:11,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max05-1.i [2020-10-29 12:13:11,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24c911c47/ac3e8d0bd6754237826135219c4a4e02/FLAG121e639c4 [2020-10-29 12:13:12,494 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:13:12,495 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/max05-1.i [2020-10-29 12:13:12,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24c911c47/ac3e8d0bd6754237826135219c4a4e02/FLAG121e639c4 [2020-10-29 12:13:12,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24c911c47/ac3e8d0bd6754237826135219c4a4e02 [2020-10-29 12:13:12,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:13:12,869 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:13:12,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:13:12,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:13:12,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:13:12,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:13:12" (1/1) ... [2020-10-29 12:13:12,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@527953c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:13:12, skipping insertion in model container [2020-10-29 12:13:12,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:13:12" (1/1) ... [2020-10-29 12:13:12,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:13:12,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:13:13,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:13:13,108 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:13:13,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:13:13,162 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:13:13,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:13:13 WrapperNode [2020-10-29 12:13:13,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:13:13,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:13:13,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:13:13,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:13:13,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:13:13" (1/1) ... [2020-10-29 12:13:13,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:13:13" (1/1) ... [2020-10-29 12:13:13,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:13:13" (1/1) ... [2020-10-29 12:13:13,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:13:13" (1/1) ... [2020-10-29 12:13:13,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:13:13" (1/1) ... [2020-10-29 12:13:13,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:13:13" (1/1) ... [2020-10-29 12:13:13,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:13:13" (1/1) ... [2020-10-29 12:13:13,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:13:13,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:13:13,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:13:13,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:13:13,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:13:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:13:13,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:13:13,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:13:13,307 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:13:13,307 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2020-10-29 12:13:13,308 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:13:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:13:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:13:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 12:13:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 12:13:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:13:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:13:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 12:13:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure max [2020-10-29 12:13:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:13:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:13:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:13:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:13:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:13:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:13:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:13:13,877 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:13:13,877 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 12:13:13,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:13:13 BoogieIcfgContainer [2020-10-29 12:13:13,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:13:13,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:13:13,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:13:13,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:13:13,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:13:12" (1/3) ... [2020-10-29 12:13:13,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2f1b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:13:13, skipping insertion in model container [2020-10-29 12:13:13,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:13:13" (2/3) ... [2020-10-29 12:13:13,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2f1b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:13:13, skipping insertion in model container [2020-10-29 12:13:13,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:13:13" (3/3) ... [2020-10-29 12:13:13,896 INFO L111 eAbstractionObserver]: Analyzing ICFG max05-1.i [2020-10-29 12:13:13,911 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:13:13,954 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:13:14,015 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:13:14,070 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:13:14,071 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:13:14,071 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:13:14,071 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:13:14,071 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:13:14,071 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:13:14,072 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:13:14,072 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:13:14,097 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-29 12:13:14,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 12:13:14,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:13:14,109 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:13:14,110 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:13:14,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:13:14,127 INFO L82 PathProgramCache]: Analyzing trace with hash -122162658, now seen corresponding path program 1 times [2020-10-29 12:13:14,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:13:14,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712038078] [2020-10-29 12:13:14,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:13:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:14,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:14,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:14,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:14,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:14,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:14,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:16,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:16,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:13:16,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:13:16,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1842 [2020-10-29 12:13:16,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:16,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:16,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:13:16,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:13:16,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:13:16,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:13:16,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:13:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:16,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:16,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:16,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:16,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:16,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:13:16,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:16,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:16,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:16,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:16,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:16,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:16,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:13:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:16,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:16,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:16,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:16,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:13:16,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:16,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:13:16,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:16,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:16,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:13:16,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:16,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:13:16,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:16,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 12:13:16,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:16,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:16,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:16,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:16,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:13:16,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:16,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 12:13:16,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:16,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:16,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:13:16,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:16,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:13:16,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:13:16,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:13:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:16,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:16,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:16,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:16,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:13:16,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:16,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 12:13:16,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:16,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:16,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:13:16,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:16,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:13:16,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:13:16,666 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 12:13:16,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712038078] [2020-10-29 12:13:16,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:13:16,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:13:16,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807931681] [2020-10-29 12:13:16,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:13:16,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:13:16,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:13:16,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:13:16,695 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 11 states. [2020-10-29 12:13:17,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:13:17,149 INFO L93 Difference]: Finished difference Result 93 states and 138 transitions. [2020-10-29 12:13:17,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:13:17,151 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-29 12:13:17,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:13:17,163 INFO L225 Difference]: With dead ends: 93 [2020-10-29 12:13:17,163 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 12:13:17,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:13:17,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 12:13:17,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 41. [2020-10-29 12:13:17,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 12:13:17,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2020-10-29 12:13:17,241 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 34 [2020-10-29 12:13:17,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:13:17,241 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2020-10-29 12:13:17,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:13:17,241 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2020-10-29 12:13:17,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 12:13:17,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:13:17,245 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:13:17,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:13:17,245 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:13:17,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:13:17,246 INFO L82 PathProgramCache]: Analyzing trace with hash 76835244, now seen corresponding path program 1 times [2020-10-29 12:13:17,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:13:17,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425373766] [2020-10-29 12:13:17,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:13:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:17,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:17,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:17,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:17,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:17,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:18,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:18,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 12:13:18,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:13:18,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1451 [2020-10-29 12:13:18,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:18,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:18,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:13:18,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:13:18,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:13:18,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:18,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:13:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:18,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:18,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:18,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:18,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:18,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:13:18,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:18,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:18,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:18,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:18,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:18,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:18,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:13:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:18,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:18,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:18,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:13:18,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:18,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:13:18,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:18,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:18,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:13:18,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:18,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:13:18,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:18,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 12:13:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:18,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:18,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:18,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:18,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:13:18,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:18,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:13:18,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:18,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:18,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:13:18,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:18,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:13:18,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:18,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 12:13:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:18,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:18,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:18,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:18,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:13:18,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:18,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:13:18,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:18,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:18,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:13:18,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:18,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:13:18,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:18,861 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 12:13:18,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425373766] [2020-10-29 12:13:18,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:13:18,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 12:13:18,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852579050] [2020-10-29 12:13:18,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:13:18,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:13:18,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:13:18,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:13:18,865 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand 5 states. [2020-10-29 12:13:19,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:13:19,030 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2020-10-29 12:13:19,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:13:19,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-10-29 12:13:19,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:13:19,032 INFO L225 Difference]: With dead ends: 70 [2020-10-29 12:13:19,032 INFO L226 Difference]: Without dead ends: 38 [2020-10-29 12:13:19,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:13:19,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-29 12:13:19,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2020-10-29 12:13:19,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 12:13:19,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-10-29 12:13:19,043 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 38 [2020-10-29 12:13:19,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:13:19,043 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-10-29 12:13:19,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:13:19,043 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-10-29 12:13:19,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 12:13:19,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:13:19,046 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:13:19,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:13:19,046 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:13:19,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:13:19,047 INFO L82 PathProgramCache]: Analyzing trace with hash 2055205671, now seen corresponding path program 2 times [2020-10-29 12:13:19,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:13:19,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130918399] [2020-10-29 12:13:19,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:13:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:19,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:19,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:19,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:19,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:19,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:20,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:24,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:24,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 12:13:24,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:13:24,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 12:13:24,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:24,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:24,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:13:24,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:13:24,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 12:13:24,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:24,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:13:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:24,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:24,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:24,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:24,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:24,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:13:24,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:24,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:24,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:24,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:24,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:24,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:24,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:13:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:24,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:24,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:24,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:24,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:13:24,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:24,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 12:13:24,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:24,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:24,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:13:24,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:24,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:13:24,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:24,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 12:13:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:24,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:24,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:24,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:24,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:24,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:13:24,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:13:24,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-29 12:13:24,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:24,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:13:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:13:24,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:24,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:13:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:24,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:24,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:24,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:24,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:13:24,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:24,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-29 12:13:24,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:24,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:24,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:13:24,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:24,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:13:24,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:13:24,963 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 24 proven. 48 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 12:13:24,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130918399] [2020-10-29 12:13:24,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:13:24,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 12:13:24,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94591340] [2020-10-29 12:13:24,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:13:24,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:13:24,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:13:24,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:13:24,966 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 11 states. [2020-10-29 12:13:26,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:13:26,028 INFO L93 Difference]: Finished difference Result 98 states and 122 transitions. [2020-10-29 12:13:26,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:13:26,028 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-10-29 12:13:26,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:13:26,030 INFO L225 Difference]: With dead ends: 98 [2020-10-29 12:13:26,030 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 12:13:26,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2020-10-29 12:13:26,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 12:13:26,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2020-10-29 12:13:26,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-29 12:13:26,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 83 transitions. [2020-10-29 12:13:26,047 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 83 transitions. Word has length 58 [2020-10-29 12:13:26,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:13:26,048 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 83 transitions. [2020-10-29 12:13:26,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:13:26,048 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 83 transitions. [2020-10-29 12:13:26,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 12:13:26,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:13:26,051 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:13:26,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:13:26,051 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:13:26,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:13:26,052 INFO L82 PathProgramCache]: Analyzing trace with hash -595392793, now seen corresponding path program 1 times [2020-10-29 12:13:26,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:13:26,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567113121] [2020-10-29 12:13:26,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:13:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:26,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:26,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:26,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:26,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:26,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:31,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:31,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 12:13:31,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:13:31,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:13:31,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:31,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:31,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:13:31,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-29 12:13:31,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:13:31,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:31,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:13:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:31,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:31,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:31,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:31,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:31,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:13:31,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:31,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:31,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:31,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:31,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:31,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:31,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:13:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:31,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:31,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:31,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:31,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:13:31,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:31,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 12:13:31,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:31,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:31,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:13:31,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:31,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:13:31,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:31,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 12:13:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:31,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:31,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:31,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:31,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:13:31,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:31,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 12:13:31,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:31,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:31,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:13:31,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:31,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:13:31,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:31,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:13:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:31,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:31,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:31,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:13:31,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:31,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 12:13:31,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:31,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:31,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:13:31,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:31,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:13:31,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:31,316 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 18 proven. 36 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-29 12:13:31,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567113121] [2020-10-29 12:13:31,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:13:31,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 12:13:31,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840240395] [2020-10-29 12:13:31,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:13:31,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:13:31,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:13:31,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:13:31,321 INFO L87 Difference]: Start difference. First operand 66 states and 83 transitions. Second operand 6 states. [2020-10-29 12:13:31,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:13:31,542 INFO L93 Difference]: Finished difference Result 137 states and 183 transitions. [2020-10-29 12:13:31,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:13:31,543 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-29 12:13:31,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:13:31,545 INFO L225 Difference]: With dead ends: 137 [2020-10-29 12:13:31,546 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 12:13:31,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:13:31,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 12:13:31,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2020-10-29 12:13:31,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-29 12:13:31,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2020-10-29 12:13:31,574 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 58 [2020-10-29 12:13:31,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:13:31,576 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2020-10-29 12:13:31,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:13:31,577 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2020-10-29 12:13:31,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 12:13:31,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:13:31,591 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:13:31,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:13:31,591 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:13:31,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:13:31,592 INFO L82 PathProgramCache]: Analyzing trace with hash 2060222850, now seen corresponding path program 2 times [2020-10-29 12:13:31,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:13:31,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116252212] [2020-10-29 12:13:31,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:13:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:31,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:31,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:31,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:31,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:32,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:33,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:36,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:36,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 12:13:36,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:13:36,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:13:36,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:36,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:36,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:13:36,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-29 12:13:36,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:13:36,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:36,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:13:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:36,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:36,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:36,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:36,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:36,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:13:36,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:36,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:36,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:36,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:36,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:36,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:13:36,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:13:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:36,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:36,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:36,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:36,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:13:36,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:36,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 12:13:36,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:36,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:13:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:13:36,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:36,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 12:13:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:36,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:36,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:36,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:36,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:13:36,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:36,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 12:13:36,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:36,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:36,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:13:36,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:36,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:13:36,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:36,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:13:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:36,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:36,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:36,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:13:36,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:36,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 12:13:36,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:36,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:36,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:13:36,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:36,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:13:36,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:36,858 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 45 proven. 90 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-29 12:13:36,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116252212] [2020-10-29 12:13:36,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:13:36,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 12:13:36,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285527492] [2020-10-29 12:13:36,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 12:13:36,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:13:36,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 12:13:36,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:13:36,863 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 7 states. [2020-10-29 12:13:37,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:13:37,099 INFO L93 Difference]: Finished difference Result 153 states and 203 transitions. [2020-10-29 12:13:37,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:13:37,099 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-10-29 12:13:37,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:13:37,103 INFO L225 Difference]: With dead ends: 153 [2020-10-29 12:13:37,103 INFO L226 Difference]: Without dead ends: 88 [2020-10-29 12:13:37,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:13:37,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-29 12:13:37,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 82. [2020-10-29 12:13:37,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-29 12:13:37,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 103 transitions. [2020-10-29 12:13:37,134 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 103 transitions. Word has length 70 [2020-10-29 12:13:37,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:13:37,135 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 103 transitions. [2020-10-29 12:13:37,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 12:13:37,135 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 103 transitions. [2020-10-29 12:13:37,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 12:13:37,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:13:37,137 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:13:37,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:13:37,137 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:13:37,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:13:37,138 INFO L82 PathProgramCache]: Analyzing trace with hash 538831773, now seen corresponding path program 3 times [2020-10-29 12:13:37,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:13:37,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665344517] [2020-10-29 12:13:37,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:13:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:37,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:37,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:37,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:37,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:37,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:38,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:39,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:40,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:40,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:42,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:42,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 12:13:42,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:13:42,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 12:13:42,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:42,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:42,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 12:13:42,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:13:42,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 12:13:42,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:42,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:13:42,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:42,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:42,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:42,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:42,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:42,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:13:42,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:42,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:42,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:42,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:42,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:42,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:42,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:13:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:42,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:42,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:42,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:42,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:42,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:13:42,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:13:42,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-29 12:13:42,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:42,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:42,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:13:42,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:42,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:13:42,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:42,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 12:13:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:42,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:42,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:42,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:42,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:42,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:13:42,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:13:42,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-29 12:13:42,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:42,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:13:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:13:42,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:42,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 12:13:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:42,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:43,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:43,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:43,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:13:43,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:43,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-29 12:13:43,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:43,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:43,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:13:43,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:43,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:13:43,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:43,230 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 84 proven. 168 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-29 12:13:43,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665344517] [2020-10-29 12:13:43,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:13:43,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 12:13:43,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330278371] [2020-10-29 12:13:43,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:13:43,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:13:43,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:13:43,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:13:43,234 INFO L87 Difference]: Start difference. First operand 82 states and 103 transitions. Second operand 10 states. [2020-10-29 12:13:43,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:13:43,544 INFO L93 Difference]: Finished difference Result 163 states and 215 transitions. [2020-10-29 12:13:43,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:13:43,544 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2020-10-29 12:13:43,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:13:43,547 INFO L225 Difference]: With dead ends: 163 [2020-10-29 12:13:43,548 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 12:13:43,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:13:43,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 12:13:43,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-10-29 12:13:43,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-29 12:13:43,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 113 transitions. [2020-10-29 12:13:43,565 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 113 transitions. Word has length 82 [2020-10-29 12:13:43,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:13:43,565 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 113 transitions. [2020-10-29 12:13:43,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:13:43,565 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 113 transitions. [2020-10-29 12:13:43,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 12:13:43,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:13:43,567 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 13, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:13:43,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:13:43,567 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:13:43,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:13:43,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1308034360, now seen corresponding path program 4 times [2020-10-29 12:13:43,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:13:43,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568260194] [2020-10-29 12:13:43,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:13:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:43,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:43,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:43,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:43,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:44,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:44,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:45,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:45,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:46,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:48,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:48,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 12:13:48,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:13:48,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 12:13:48,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:48,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:48,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 12:13:48,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:13:48,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 12:13:48,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:13:48,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:13:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:48,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:48,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:48,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:48,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:48,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:13:48,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:48,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:48,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:48,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:48,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:48,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:48,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:13:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:48,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:48,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:48,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:49,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:49,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:13:49,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:13:49,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-29 12:13:49,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:49,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:49,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:13:49,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:49,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:13:49,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:49,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 12:13:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:49,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:49,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:49,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:49,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:49,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:13:49,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:13:49,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-29 12:13:49,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:49,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:49,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:13:49,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:49,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:13:49,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:49,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 12:13:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:49,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:49,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:49,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:50,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:50,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:13:50,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:13:50,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-10-29 12:13:50,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:50,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:50,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:13:50,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:50,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:13:50,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:13:50,856 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 131 proven. 283 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-29 12:13:50,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568260194] [2020-10-29 12:13:50,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:13:50,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 12:13:50,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497055622] [2020-10-29 12:13:50,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 12:13:50,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:13:50,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 12:13:50,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2020-10-29 12:13:50,861 INFO L87 Difference]: Start difference. First operand 90 states and 113 transitions. Second operand 26 states. [2020-10-29 12:13:51,225 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2020-10-29 12:13:51,907 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2020-10-29 12:13:52,060 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2020-10-29 12:13:52,221 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2020-10-29 12:13:52,528 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2020-10-29 12:13:52,780 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 45 [2020-10-29 12:13:52,948 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2020-10-29 12:13:53,097 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-10-29 12:13:53,285 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2020-10-29 12:13:53,588 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2020-10-29 12:13:53,789 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-29 12:13:54,126 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-29 12:13:54,589 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-10-29 12:13:54,865 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2020-10-29 12:13:56,166 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2020-10-29 12:13:56,689 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-29 12:13:58,738 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2020-10-29 12:13:58,947 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2020-10-29 12:13:59,101 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2020-10-29 12:13:59,291 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2020-10-29 12:13:59,626 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2020-10-29 12:13:59,787 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2020-10-29 12:14:00,099 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2020-10-29 12:14:00,278 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2020-10-29 12:14:01,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:01,212 INFO L93 Difference]: Finished difference Result 412 states and 637 transitions. [2020-10-29 12:14:01,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-10-29 12:14:01,215 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 94 [2020-10-29 12:14:01,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:01,221 INFO L225 Difference]: With dead ends: 412 [2020-10-29 12:14:01,222 INFO L226 Difference]: Without dead ends: 378 [2020-10-29 12:14:01,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3079 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=1446, Invalid=8856, Unknown=0, NotChecked=0, Total=10302 [2020-10-29 12:14:01,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-10-29 12:14:01,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 300. [2020-10-29 12:14:01,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-10-29 12:14:01,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 424 transitions. [2020-10-29 12:14:01,329 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 424 transitions. Word has length 94 [2020-10-29 12:14:01,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:01,330 INFO L481 AbstractCegarLoop]: Abstraction has 300 states and 424 transitions. [2020-10-29 12:14:01,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 12:14:01,330 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 424 transitions. [2020-10-29 12:14:01,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 12:14:01,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:01,336 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:01,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:14:01,336 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:01,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:01,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1566199798, now seen corresponding path program 5 times [2020-10-29 12:14:01,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:01,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666594130] [2020-10-29 12:14:01,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:01,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:01,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:01,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:01,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 12:14:01,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:01,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-29 12:14:01,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:01,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:01,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:14:01,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:14:01,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:14:01,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:01,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:01,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:01,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:01,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:01,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:01,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:14:01,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:01,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:01,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:01,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:01,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:01,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:01,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:14:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:01,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:01,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:01,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:01,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:01,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:14:01,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:01,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:01,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:01,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:14:01,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:01,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:01,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 12:14:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:01,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:01,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:01,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:01,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:01,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 12:14:01,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:01,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:01,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:01,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:14:01,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:01,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:01,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 12:14:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:01,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:01,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:01,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:01,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:01,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:14:01,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:01,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:01,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:01,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:14:01,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:01,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:01,831 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-10-29 12:14:01,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666594130] [2020-10-29 12:14:01,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:14:01,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 12:14:01,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125906956] [2020-10-29 12:14:01,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 12:14:01,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:01,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 12:14:01,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:14:01,836 INFO L87 Difference]: Start difference. First operand 300 states and 424 transitions. Second operand 4 states. [2020-10-29 12:14:01,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:01,953 INFO L93 Difference]: Finished difference Result 594 states and 842 transitions. [2020-10-29 12:14:01,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 12:14:01,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-10-29 12:14:01,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:01,959 INFO L225 Difference]: With dead ends: 594 [2020-10-29 12:14:01,959 INFO L226 Difference]: Without dead ends: 302 [2020-10-29 12:14:01,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:14:01,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-29 12:14:02,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 301. [2020-10-29 12:14:02,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-10-29 12:14:02,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 425 transitions. [2020-10-29 12:14:02,018 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 425 transitions. Word has length 94 [2020-10-29 12:14:02,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:02,018 INFO L481 AbstractCegarLoop]: Abstraction has 301 states and 425 transitions. [2020-10-29 12:14:02,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 12:14:02,019 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 425 transitions. [2020-10-29 12:14:02,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 12:14:02,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:02,026 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:02,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:14:02,026 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:02,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:02,027 INFO L82 PathProgramCache]: Analyzing trace with hash 843036984, now seen corresponding path program 1 times [2020-10-29 12:14:02,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:02,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884204319] [2020-10-29 12:14:02,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:02,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:02,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:02,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:02,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 12:14:02,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:02,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-10-29 12:14:02,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:02,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:02,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:14:02,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:14:02,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 12:14:02,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:02,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:02,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:02,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:02,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:02,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:02,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:14:02,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:02,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:02,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:02,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:02,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:02,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:02,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:14:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:02,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:02,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:02,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:02,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:02,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:14:02,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:02,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:02,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:02,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:14:02,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:02,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:02,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 12:14:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:02,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:02,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:02,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:02,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:02,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:14:02,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:02,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:02,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:02,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:14:02,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:02,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:02,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 12:14:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:02,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:02,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:02,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:02,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:02,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:14:02,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:02,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:02,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:02,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:14:02,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:02,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:02,704 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-10-29 12:14:02,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884204319] [2020-10-29 12:14:02,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:02,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 12:14:02,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358863840] [2020-10-29 12:14:02,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:14:02,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:02,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:14:02,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:14:02,707 INFO L87 Difference]: Start difference. First operand 301 states and 425 transitions. Second operand 5 states. [2020-10-29 12:14:02,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:02,836 INFO L93 Difference]: Finished difference Result 596 states and 844 transitions. [2020-10-29 12:14:02,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:14:02,837 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-29 12:14:02,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:02,841 INFO L225 Difference]: With dead ends: 596 [2020-10-29 12:14:02,841 INFO L226 Difference]: Without dead ends: 304 [2020-10-29 12:14:02,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:14:02,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-29 12:14:02,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 303. [2020-10-29 12:14:02,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-10-29 12:14:02,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 427 transitions. [2020-10-29 12:14:02,889 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 427 transitions. Word has length 96 [2020-10-29 12:14:02,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:02,889 INFO L481 AbstractCegarLoop]: Abstraction has 303 states and 427 transitions. [2020-10-29 12:14:02,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:14:02,889 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 427 transitions. [2020-10-29 12:14:02,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 12:14:02,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:02,894 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:02,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:14:02,895 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:02,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:02,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1668274682, now seen corresponding path program 2 times [2020-10-29 12:14:02,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:02,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755343242] [2020-10-29 12:14:02,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:02,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:02,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:03,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:03,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 12:14:03,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:03,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 747 [2020-10-29 12:14:03,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:03,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:14:03,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:14:03,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:14:03,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:03,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:03,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:03,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:03,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:03,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:03,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:14:03,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:03,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:03,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:03,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:03,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:03,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:03,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 12:14:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:03,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:03,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:03,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:03,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:03,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:14:03,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:03,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:03,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:03,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:14:03,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:03,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:03,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:14:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:03,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:03,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:03,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:03,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:03,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:14:03,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:03,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:03,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:03,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:14:03,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:03,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:03,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 12:14:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:03,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:03,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:03,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:03,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:03,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:14:03,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:03,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:03,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:03,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:14:03,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:03,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:03,832 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-10-29 12:14:03,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755343242] [2020-10-29 12:14:03,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:03,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 12:14:03,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099397432] [2020-10-29 12:14:03,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:14:03,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:03,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:14:03,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:14:03,834 INFO L87 Difference]: Start difference. First operand 303 states and 427 transitions. Second operand 6 states. [2020-10-29 12:14:03,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:03,972 INFO L93 Difference]: Finished difference Result 598 states and 846 transitions. [2020-10-29 12:14:03,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:14:03,973 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-10-29 12:14:03,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:03,977 INFO L225 Difference]: With dead ends: 598 [2020-10-29 12:14:03,978 INFO L226 Difference]: Without dead ends: 306 [2020-10-29 12:14:03,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:14:03,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-29 12:14:04,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 305. [2020-10-29 12:14:04,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-10-29 12:14:04,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 429 transitions. [2020-10-29 12:14:04,029 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 429 transitions. Word has length 98 [2020-10-29 12:14:04,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:04,029 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 429 transitions. [2020-10-29 12:14:04,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:14:04,029 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 429 transitions. [2020-10-29 12:14:04,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 12:14:04,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:04,038 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:04,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:14:04,038 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:04,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:04,039 INFO L82 PathProgramCache]: Analyzing trace with hash 152752700, now seen corresponding path program 3 times [2020-10-29 12:14:04,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:04,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988422862] [2020-10-29 12:14:04,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:04,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:04,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:05,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:05,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 12:14:05,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:05,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-29 12:14:05,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:05,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:05,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:14:05,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:14:05,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:14:05,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:05,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:05,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:05,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:05,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:05,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:05,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:14:05,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:05,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:05,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:05,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:05,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:05,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:05,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 12:14:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:05,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:05,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:05,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:05,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:05,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:14:05,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:05,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:05,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:05,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:14:05,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:05,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:05,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 12:14:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:05,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:05,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:05,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:05,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:05,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:14:05,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:05,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:05,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:05,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:14:05,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:05,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:05,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 12:14:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:05,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:05,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:05,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:05,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:05,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:14:05,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:05,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:05,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:05,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:14:05,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:05,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:05,166 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-10-29 12:14:05,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988422862] [2020-10-29 12:14:05,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:05,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 12:14:05,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70053936] [2020-10-29 12:14:05,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 12:14:05,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:05,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 12:14:05,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:14:05,169 INFO L87 Difference]: Start difference. First operand 305 states and 429 transitions. Second operand 7 states. [2020-10-29 12:14:05,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:05,313 INFO L93 Difference]: Finished difference Result 600 states and 848 transitions. [2020-10-29 12:14:05,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:14:05,314 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-10-29 12:14:05,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:05,320 INFO L225 Difference]: With dead ends: 600 [2020-10-29 12:14:05,320 INFO L226 Difference]: Without dead ends: 308 [2020-10-29 12:14:05,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:14:05,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-29 12:14:05,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 307. [2020-10-29 12:14:05,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-10-29 12:14:05,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 431 transitions. [2020-10-29 12:14:05,360 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 431 transitions. Word has length 100 [2020-10-29 12:14:05,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:05,361 INFO L481 AbstractCegarLoop]: Abstraction has 307 states and 431 transitions. [2020-10-29 12:14:05,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 12:14:05,361 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 431 transitions. [2020-10-29 12:14:05,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 12:14:05,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:05,367 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:05,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:14:05,368 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:05,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:05,368 INFO L82 PathProgramCache]: Analyzing trace with hash -269958658, now seen corresponding path program 4 times [2020-10-29 12:14:05,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:05,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138752276] [2020-10-29 12:14:05,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:05,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:05,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:06,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:06,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 12:14:06,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:06,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1093 [2020-10-29 12:14:06,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:06,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:06,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:14:06,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:14:06,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:14:06,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:06,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:06,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:06,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:06,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:06,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:06,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:14:06,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:06,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:06,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:06,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:06,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:06,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:06,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 12:14:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:06,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:06,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:06,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:06,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:06,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:14:06,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:06,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:06,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:06,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:14:06,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:06,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:06,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 12:14:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:06,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:06,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:06,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:06,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:06,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:14:06,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:06,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:06,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:06,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:14:06,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:06,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:06,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 12:14:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:06,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:06,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:06,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:06,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:06,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:14:06,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:06,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:06,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:06,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:14:06,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:06,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:06,658 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-10-29 12:14:06,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138752276] [2020-10-29 12:14:06,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:06,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 12:14:06,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988712501] [2020-10-29 12:14:06,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:14:06,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:06,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:14:06,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:14:06,667 INFO L87 Difference]: Start difference. First operand 307 states and 431 transitions. Second operand 8 states. [2020-10-29 12:14:06,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:06,815 INFO L93 Difference]: Finished difference Result 601 states and 849 transitions. [2020-10-29 12:14:06,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:14:06,816 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 102 [2020-10-29 12:14:06,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:06,820 INFO L225 Difference]: With dead ends: 601 [2020-10-29 12:14:06,820 INFO L226 Difference]: Without dead ends: 309 [2020-10-29 12:14:06,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:14:06,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-29 12:14:06,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2020-10-29 12:14:06,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-10-29 12:14:06,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 433 transitions. [2020-10-29 12:14:06,858 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 433 transitions. Word has length 102 [2020-10-29 12:14:06,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:06,858 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 433 transitions. [2020-10-29 12:14:06,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:14:06,858 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 433 transitions. [2020-10-29 12:14:06,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 12:14:06,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:06,863 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 5, 5, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:06,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 12:14:06,863 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:06,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:06,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1526319424, now seen corresponding path program 5 times [2020-10-29 12:14:06,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:06,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814972888] [2020-10-29 12:14:06,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:06,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:07,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:07,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 12:14:07,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:07,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-29 12:14:07,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:07,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:07,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:14:07,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-29 12:14:07,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:14:07,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:07,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:07,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:07,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:07,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:07,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:07,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:14:07,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:07,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:07,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:07,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:07,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:07,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:07,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:14:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:07,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:07,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:07,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:07,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:07,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:14:07,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:07,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:07,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:07,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:07,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:07,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:07,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:14:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:07,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:07,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:07,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:07,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:07,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:14:07,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:07,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:07,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:07,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:07,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:07,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:07,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 12:14:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:07,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:07,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:07,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:07,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:07,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:14:07,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:07,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:14:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:07,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:07,156 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2020-10-29 12:14:07,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814972888] [2020-10-29 12:14:07,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:14:07,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 12:14:07,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372726506] [2020-10-29 12:14:07,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 12:14:07,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:07,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 12:14:07,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:14:07,158 INFO L87 Difference]: Start difference. First operand 309 states and 433 transitions. Second operand 4 states. [2020-10-29 12:14:07,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:07,270 INFO L93 Difference]: Finished difference Result 473 states and 636 transitions. [2020-10-29 12:14:07,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 12:14:07,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-29 12:14:07,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:07,273 INFO L225 Difference]: With dead ends: 473 [2020-10-29 12:14:07,273 INFO L226 Difference]: Without dead ends: 215 [2020-10-29 12:14:07,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:14:07,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-29 12:14:07,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 81. [2020-10-29 12:14:07,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 12:14:07,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 98 transitions. [2020-10-29 12:14:07,288 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 98 transitions. Word has length 104 [2020-10-29 12:14:07,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:07,288 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 98 transitions. [2020-10-29 12:14:07,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 12:14:07,288 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 98 transitions. [2020-10-29 12:14:07,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 12:14:07,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:07,290 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:07,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 12:14:07,290 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:07,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:07,291 INFO L82 PathProgramCache]: Analyzing trace with hash -315992286, now seen corresponding path program 1 times [2020-10-29 12:14:07,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:07,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90523023] [2020-10-29 12:14:07,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:07,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:07,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:07,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:08,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:08,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:08,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:12,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:12,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 12:14:12,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:14:12,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 12:14:12,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:12,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:12,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 12:14:12,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:14:12,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 12:14:12,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:12,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:12,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:12,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:12,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:12,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:12,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:14:12,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:12,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:12,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:12,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:12,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:12,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:12,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:14:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:12,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:12,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:12,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:12,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:12,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:12,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:14:12,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-29 12:14:12,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:12,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:12,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:14:12,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:12,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:14:12,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:13,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:14:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:13,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:13,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:13,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:13,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:13,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:13,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:14:13,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-10-29 12:14:13,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:13,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:13,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:14:13,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:13,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:14:13,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:13,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 12:14:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:13,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:13,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:13,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:13,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:13,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:13,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:14:13,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-29 12:14:13,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:13,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:13,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:14:13,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:13,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:14:13,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:14,470 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 124 proven. 288 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-29 12:14:14,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90523023] [2020-10-29 12:14:14,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:14,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 12:14:14,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361682631] [2020-10-29 12:14:14,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 12:14:14,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:14,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 12:14:14,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=643, Unknown=0, NotChecked=0, Total=702 [2020-10-29 12:14:14,472 INFO L87 Difference]: Start difference. First operand 81 states and 98 transitions. Second operand 27 states. [2020-10-29 12:14:16,290 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2020-10-29 12:14:17,183 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2020-10-29 12:14:17,511 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2020-10-29 12:14:17,786 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-29 12:14:18,608 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-29 12:14:20,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:20,325 INFO L93 Difference]: Finished difference Result 221 states and 313 transitions. [2020-10-29 12:14:20,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-29 12:14:20,326 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 106 [2020-10-29 12:14:20,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:20,329 INFO L225 Difference]: With dead ends: 221 [2020-10-29 12:14:20,329 INFO L226 Difference]: Without dead ends: 215 [2020-10-29 12:14:20,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1193 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=642, Invalid=4470, Unknown=0, NotChecked=0, Total=5112 [2020-10-29 12:14:20,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-29 12:14:20,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 169. [2020-10-29 12:14:20,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-29 12:14:20,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 237 transitions. [2020-10-29 12:14:20,352 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 237 transitions. Word has length 106 [2020-10-29 12:14:20,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:20,352 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 237 transitions. [2020-10-29 12:14:20,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 12:14:20,352 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 237 transitions. [2020-10-29 12:14:20,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 12:14:20,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:20,355 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 13, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:20,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 12:14:20,356 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:20,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:20,356 INFO L82 PathProgramCache]: Analyzing trace with hash -57826848, now seen corresponding path program 2 times [2020-10-29 12:14:20,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:20,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507907908] [2020-10-29 12:14:20,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:20,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:20,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:21,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:21,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:21,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:22,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:22,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:23,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:24,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:25,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:25,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 12:14:25,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:14:25,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 12:14:25,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:25,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:25,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:14:25,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:14:25,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 12:14:25,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:25,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:25,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:25,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:25,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:25,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:25,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:14:25,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:25,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:25,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:25,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:25,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:25,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:25,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:14:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:25,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:25,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:25,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:25,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:25,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:25,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-29 12:14:25,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:25,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:25,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:14:25,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:25,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:14:25,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:25,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:14:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:25,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:25,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:25,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:25,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:25,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:14:25,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:25,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:25,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:14:25,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:25,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:14:25,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:25,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 12:14:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:25,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:26,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:26,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:26,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:26,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:26,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:14:26,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-29 12:14:26,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:26,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:26,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:14:26,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:26,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:14:26,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:26,620 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 174 proven. 223 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-29 12:14:26,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507907908] [2020-10-29 12:14:26,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:26,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 12:14:26,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912309324] [2020-10-29 12:14:26,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 12:14:26,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:26,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 12:14:26,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:14:26,622 INFO L87 Difference]: Start difference. First operand 169 states and 237 transitions. Second operand 18 states. [2020-10-29 12:14:27,262 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-29 12:14:27,606 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-29 12:14:28,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:28,331 INFO L93 Difference]: Finished difference Result 222 states and 318 transitions. [2020-10-29 12:14:28,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 12:14:28,331 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 106 [2020-10-29 12:14:28,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:28,334 INFO L225 Difference]: With dead ends: 222 [2020-10-29 12:14:28,334 INFO L226 Difference]: Without dead ends: 216 [2020-10-29 12:14:28,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=161, Invalid=1029, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 12:14:28,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-29 12:14:28,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 201. [2020-10-29 12:14:28,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-29 12:14:28,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 292 transitions. [2020-10-29 12:14:28,366 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 292 transitions. Word has length 106 [2020-10-29 12:14:28,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:28,367 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 292 transitions. [2020-10-29 12:14:28,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 12:14:28,367 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 292 transitions. [2020-10-29 12:14:28,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 12:14:28,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:28,370 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 5, 5, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:28,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 12:14:28,371 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:28,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:28,371 INFO L82 PathProgramCache]: Analyzing trace with hash -875475298, now seen corresponding path program 3 times [2020-10-29 12:14:28,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:28,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174362557] [2020-10-29 12:14:28,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:28,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:28,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:28,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:28,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:29,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:29,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:30,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:31,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:31,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:31,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:31,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:32,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:33,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:33,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:33,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 12:14:33,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 12:14:33,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 12:14:33,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:33,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:33,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 12:14:33,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:14:33,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 12:14:33,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:33,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:33,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:33,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:33,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:33,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:33,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:14:33,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:33,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:33,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:33,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:33,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:33,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:33,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:14:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:33,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:33,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:33,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:33,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:33,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:33,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-29 12:14:33,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:33,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:33,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:14:33,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:33,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:14:33,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:34,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:14:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:34,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:34,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:34,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:34,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:34,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:14:34,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:34,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:34,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:14:34,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:34,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:14:34,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:34,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 12:14:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:34,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:34,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:34,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:34,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:34,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:34,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:14:34,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-29 12:14:34,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:34,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:14:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:14:34,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:34,740 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 114 proven. 299 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-29 12:14:34,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174362557] [2020-10-29 12:14:34,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:34,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 12:14:34,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090892255] [2020-10-29 12:14:34,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 12:14:34,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:34,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 12:14:34,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:14:34,743 INFO L87 Difference]: Start difference. First operand 201 states and 292 transitions. Second operand 23 states. [2020-10-29 12:14:35,436 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-29 12:14:36,061 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-10-29 12:14:36,318 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-10-29 12:14:36,474 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-10-29 12:14:37,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:37,525 INFO L93 Difference]: Finished difference Result 414 states and 586 transitions. [2020-10-29 12:14:37,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 12:14:37,526 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 106 [2020-10-29 12:14:37,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:37,529 INFO L225 Difference]: With dead ends: 414 [2020-10-29 12:14:37,529 INFO L226 Difference]: Without dead ends: 247 [2020-10-29 12:14:37,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=198, Invalid=1608, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 12:14:37,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-29 12:14:37,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 236. [2020-10-29 12:14:37,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-29 12:14:37,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 352 transitions. [2020-10-29 12:14:37,560 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 352 transitions. Word has length 106 [2020-10-29 12:14:37,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:37,560 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 352 transitions. [2020-10-29 12:14:37,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 12:14:37,560 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 352 transitions. [2020-10-29 12:14:37,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 12:14:37,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:37,565 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 5, 5, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:37,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 12:14:37,566 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:37,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:37,566 INFO L82 PathProgramCache]: Analyzing trace with hash -191840354, now seen corresponding path program 4 times [2020-10-29 12:14:37,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:37,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321110458] [2020-10-29 12:14:37,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:37,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:37,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:37,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 12:14:37,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:37,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-29 12:14:37,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:37,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:37,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:14:37,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-29 12:14:37,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 12:14:37,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:37,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:37,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:37,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:37,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:37,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:37,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:14:37,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:37,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:37,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:37,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:37,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:37,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:37,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:14:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:37,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:37,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:37,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:37,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:37,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:14:37,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:37,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:37,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:37,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:37,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:37,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:37,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:14:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:37,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:37,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:37,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:37,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:37,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 12:14:37,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:37,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:37,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:37,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:37,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:37,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:37,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 12:14:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:37,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:37,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:37,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:37,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:37,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:14:37,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:37,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:14:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:37,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:37,901 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2020-10-29 12:14:37,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321110458] [2020-10-29 12:14:37,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:37,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 12:14:37,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622052592] [2020-10-29 12:14:37,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:14:37,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:37,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:14:37,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:14:37,903 INFO L87 Difference]: Start difference. First operand 236 states and 352 transitions. Second operand 5 states. [2020-10-29 12:14:38,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:38,022 INFO L93 Difference]: Finished difference Result 419 states and 576 transitions. [2020-10-29 12:14:38,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:14:38,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-29 12:14:38,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:38,026 INFO L225 Difference]: With dead ends: 419 [2020-10-29 12:14:38,026 INFO L226 Difference]: Without dead ends: 231 [2020-10-29 12:14:38,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:14:38,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-29 12:14:38,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 117. [2020-10-29 12:14:38,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-29 12:14:38,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 147 transitions. [2020-10-29 12:14:38,045 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 147 transitions. Word has length 106 [2020-10-29 12:14:38,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:38,045 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 147 transitions. [2020-10-29 12:14:38,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:14:38,046 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 147 transitions. [2020-10-29 12:14:38,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 12:14:38,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:38,047 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:38,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 12:14:38,048 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:38,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:38,048 INFO L82 PathProgramCache]: Analyzing trace with hash 2094870016, now seen corresponding path program 5 times [2020-10-29 12:14:38,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:38,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911223751] [2020-10-29 12:14:38,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:38,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:38,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:38,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:38,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:39,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:43,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:43,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 12:14:43,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:14:43,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 12:14:43,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:43,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:43,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:14:43,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:14:43,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 12:14:43,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:43,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:43,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:43,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:43,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:43,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:43,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:14:43,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:43,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:43,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:43,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:43,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:43,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:43,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:14:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:43,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:43,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:43,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:43,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:43,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:43,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-29 12:14:43,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:43,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:43,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:14:43,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:43,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:14:43,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:43,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:14:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:43,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:43,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:43,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:43,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:43,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 12:14:43,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:43,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:14:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:14:43,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:43,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:14:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:43,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:43,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:43,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:43,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:43,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:43,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 12:14:43,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:43,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:43,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:14:43,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:43,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:14:43,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:44,061 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 117 proven. 214 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-10-29 12:14:44,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911223751] [2020-10-29 12:14:44,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:44,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 12:14:44,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232530681] [2020-10-29 12:14:44,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 12:14:44,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:44,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 12:14:44,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:14:44,063 INFO L87 Difference]: Start difference. First operand 117 states and 147 transitions. Second operand 18 states. [2020-10-29 12:14:45,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:45,217 INFO L93 Difference]: Finished difference Result 138 states and 172 transitions. [2020-10-29 12:14:45,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:14:45,218 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 108 [2020-10-29 12:14:45,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:45,219 INFO L225 Difference]: With dead ends: 138 [2020-10-29 12:14:45,219 INFO L226 Difference]: Without dead ends: 132 [2020-10-29 12:14:45,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2020-10-29 12:14:45,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-29 12:14:45,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 121. [2020-10-29 12:14:45,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-29 12:14:45,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 154 transitions. [2020-10-29 12:14:45,234 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 154 transitions. Word has length 108 [2020-10-29 12:14:45,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:45,234 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 154 transitions. [2020-10-29 12:14:45,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 12:14:45,234 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 154 transitions. [2020-10-29 12:14:45,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 12:14:45,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:45,236 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 13, 5, 5, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:45,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 12:14:45,237 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:45,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:45,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1960856510, now seen corresponding path program 6 times [2020-10-29 12:14:45,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:45,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935161865] [2020-10-29 12:14:45,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:45,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:45,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:45,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:45,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:46,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:46,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:47,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:48,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:48,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:49,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:50,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:50,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:50,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 12:14:50,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 12:14:50,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 12:14:50,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:50,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 12:14:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:14:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 12:14:50,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:50,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:50,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:50,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:50,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:50,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:50,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:14:50,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:50,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:50,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:50,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:50,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:50,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:50,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:14:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:50,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:50,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:50,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:50,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:50,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:50,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:14:50,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-29 12:14:50,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:50,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:50,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:14:50,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:50,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:14:50,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:51,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:14:51,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:51,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:51,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:51,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:51,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:51,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:51,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:14:51,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-29 12:14:51,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:51,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:51,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:14:51,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:51,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:14:51,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:51,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:14:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:51,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:51,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:51,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:51,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:51,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:51,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:14:51,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-29 12:14:51,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:51,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:51,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:14:51,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:51,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:14:51,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:52,252 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 124 proven. 291 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-29 12:14:52,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935161865] [2020-10-29 12:14:52,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:52,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 12:14:52,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243532885] [2020-10-29 12:14:52,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 12:14:52,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:52,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 12:14:52,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2020-10-29 12:14:52,255 INFO L87 Difference]: Start difference. First operand 121 states and 154 transitions. Second operand 28 states. [2020-10-29 12:14:52,992 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2020-10-29 12:14:53,313 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-10-29 12:14:53,807 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 46 [2020-10-29 12:14:54,097 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2020-10-29 12:14:54,289 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-10-29 12:14:54,475 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2020-10-29 12:14:54,751 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2020-10-29 12:14:55,119 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2020-10-29 12:14:55,493 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2020-10-29 12:14:55,646 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-10-29 12:14:55,861 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2020-10-29 12:14:56,058 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2020-10-29 12:14:56,349 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-29 12:14:56,525 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-10-29 12:14:57,096 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-29 12:14:57,340 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-29 12:14:57,787 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-29 12:14:59,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:59,277 INFO L93 Difference]: Finished difference Result 283 states and 420 transitions. [2020-10-29 12:14:59,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-29 12:14:59,279 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 108 [2020-10-29 12:14:59,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:59,283 INFO L225 Difference]: With dead ends: 283 [2020-10-29 12:14:59,284 INFO L226 Difference]: Without dead ends: 277 [2020-10-29 12:14:59,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1442 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=709, Invalid=4991, Unknown=0, NotChecked=0, Total=5700 [2020-10-29 12:14:59,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-29 12:14:59,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 193. [2020-10-29 12:14:59,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-29 12:14:59,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 278 transitions. [2020-10-29 12:14:59,332 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 278 transitions. Word has length 108 [2020-10-29 12:14:59,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:59,332 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 278 transitions. [2020-10-29 12:14:59,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 12:14:59,332 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 278 transitions. [2020-10-29 12:14:59,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 12:14:59,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:59,343 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 5, 5, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:59,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 12:14:59,343 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:59,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:59,344 INFO L82 PathProgramCache]: Analyzing trace with hash -2075945348, now seen corresponding path program 7 times [2020-10-29 12:14:59,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:59,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213046094] [2020-10-29 12:14:59,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:59,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:59,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:59,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:59,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:59,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:00,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:04,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:04,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 12:15:04,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:15:04,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 12:15:04,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:04,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:04,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 12:15:04,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:15:04,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 12:15:04,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:04,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:04,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:04,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:04,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:04,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:04,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:15:04,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:04,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:04,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:04,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:04,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:04,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:04,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:15:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:04,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:04,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:04,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:04,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:15:04,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:04,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-29 12:15:04,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:04,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:04,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:15:04,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:04,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:15:04,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:05,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:15:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:05,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:05,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:05,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:15:05,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:05,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:15:05,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:05,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:05,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:15:05,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:05,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:15:05,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:05,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:15:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:05,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:05,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:05,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:05,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:15:05,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:05,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-29 12:15:05,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:05,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:05,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:15:05,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:05,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:15:05,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:05,842 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 119 proven. 286 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-29 12:15:05,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213046094] [2020-10-29 12:15:05,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:05,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 12:15:05,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452532212] [2020-10-29 12:15:05,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 12:15:05,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:05,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 12:15:05,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:15:05,844 INFO L87 Difference]: Start difference. First operand 193 states and 278 transitions. Second operand 25 states. [2020-10-29 12:15:06,678 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-10-29 12:15:08,772 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-29 12:15:08,937 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-10-29 12:15:09,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:09,476 INFO L93 Difference]: Finished difference Result 402 states and 547 transitions. [2020-10-29 12:15:09,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 12:15:09,477 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 108 [2020-10-29 12:15:09,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:09,480 INFO L225 Difference]: With dead ends: 402 [2020-10-29 12:15:09,480 INFO L226 Difference]: Without dead ends: 343 [2020-10-29 12:15:09,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=274, Invalid=2378, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 12:15:09,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-29 12:15:09,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 247. [2020-10-29 12:15:09,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-29 12:15:09,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 343 transitions. [2020-10-29 12:15:09,515 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 343 transitions. Word has length 108 [2020-10-29 12:15:09,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:09,516 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 343 transitions. [2020-10-29 12:15:09,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 12:15:09,516 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 343 transitions. [2020-10-29 12:15:09,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 12:15:09,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:09,520 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 5, 5, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:09,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 12:15:09,520 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:09,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:09,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1843562364, now seen corresponding path program 8 times [2020-10-29 12:15:09,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:09,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820570848] [2020-10-29 12:15:09,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:09,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:09,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:09,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:09,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:10,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:10,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:12,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:14,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:14,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 12:15:14,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:15:14,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 12:15:14,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:14,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:14,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:15:14,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:15:14,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 12:15:14,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:14,739 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 30 [2020-10-29 12:15:14,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:14,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:14,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:14,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:14,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:14,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:15:14,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:14,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:14,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:14,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:14,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:14,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:14,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:15:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:14,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:14,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:15,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:15,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:15:15,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:15,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 12:15:15,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:15,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:15,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:15:15,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:15,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:15:15,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:15,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:15:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:15,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:15,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:15,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:15:15,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:15,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:15:15,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:15,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:15,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:15:15,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:15,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:15:15,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:15,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:15:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:15,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:15,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:15,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:15:15,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:15,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 12:15:15,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:15,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:15,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:15:15,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:15,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:15:15,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:15,547 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 114 proven. 265 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-29 12:15:15,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820570848] [2020-10-29 12:15:15,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:15,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 12:15:15,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756499034] [2020-10-29 12:15:15,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 12:15:15,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:15,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 12:15:15,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:15:15,549 INFO L87 Difference]: Start difference. First operand 247 states and 343 transitions. Second operand 18 states. [2020-10-29 12:15:16,009 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-29 12:15:16,144 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-10-29 12:15:16,642 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-10-29 12:15:17,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:17,488 INFO L93 Difference]: Finished difference Result 513 states and 695 transitions. [2020-10-29 12:15:17,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:15:17,489 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 108 [2020-10-29 12:15:17,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:17,492 INFO L225 Difference]: With dead ends: 513 [2020-10-29 12:15:17,492 INFO L226 Difference]: Without dead ends: 260 [2020-10-29 12:15:17,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=127, Invalid=803, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:15:17,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-29 12:15:17,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 207. [2020-10-29 12:15:17,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-29 12:15:17,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 283 transitions. [2020-10-29 12:15:17,523 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 283 transitions. Word has length 108 [2020-10-29 12:15:17,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:17,524 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 283 transitions. [2020-10-29 12:15:17,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 12:15:17,524 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 283 transitions. [2020-10-29 12:15:17,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 12:15:17,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:17,530 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 5, 5, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:17,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 12:15:17,530 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:17,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:17,531 INFO L82 PathProgramCache]: Analyzing trace with hash 818354044, now seen corresponding path program 9 times [2020-10-29 12:15:17,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:17,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052202831] [2020-10-29 12:15:17,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:17,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:17,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:17,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:17,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:18,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:19,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:19,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:19,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:20,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:22,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:22,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 12:15:22,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:15:22,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 12:15:22,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:22,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:22,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:15:22,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:15:22,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 12:15:22,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:22,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:22,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:22,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:22,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:22,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:22,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:15:22,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:22,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:22,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:22,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:15:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:22,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:22,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:22,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:23,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:23,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:15:23,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:15:23,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-29 12:15:23,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:23,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:15:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:15:23,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:15:23,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:15:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:23,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:23,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:23,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:23,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:15:23,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:23,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-29 12:15:23,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:23,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:23,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:15:23,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:23,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:15:23,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:24,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:15:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:24,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:24,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:24,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:15:24,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:24,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:15:24,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:24,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:24,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:24,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:15:24,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:24,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:24,071 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 4 proven. 406 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-29 12:15:24,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052202831] [2020-10-29 12:15:24,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:24,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 12:15:24,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144137918] [2020-10-29 12:15:24,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 12:15:24,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:24,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 12:15:24,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:15:24,073 INFO L87 Difference]: Start difference. First operand 207 states and 283 transitions. Second operand 20 states. [2020-10-29 12:15:25,452 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-29 12:15:26,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:26,625 INFO L93 Difference]: Finished difference Result 441 states and 607 transitions. [2020-10-29 12:15:26,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 12:15:26,628 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 108 [2020-10-29 12:15:26,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:26,631 INFO L225 Difference]: With dead ends: 441 [2020-10-29 12:15:26,631 INFO L226 Difference]: Without dead ends: 282 [2020-10-29 12:15:26,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=162, Invalid=1320, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 12:15:26,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-29 12:15:26,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 263. [2020-10-29 12:15:26,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-29 12:15:26,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 384 transitions. [2020-10-29 12:15:26,675 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 384 transitions. Word has length 108 [2020-10-29 12:15:26,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:26,675 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 384 transitions. [2020-10-29 12:15:26,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 12:15:26,675 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 384 transitions. [2020-10-29 12:15:26,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 12:15:26,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:26,680 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 11, 5, 5, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:26,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 12:15:26,681 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:26,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:26,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1262254718, now seen corresponding path program 10 times [2020-10-29 12:15:26,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:26,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477164781] [2020-10-29 12:15:26,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:26,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:26,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:27,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:27,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:27,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:27,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:28,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:29,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:31,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:31,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:31,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 12:15:31,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:15:31,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 12:15:31,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:31,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:31,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 12:15:31,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:15:31,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 12:15:31,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:31,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:31,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:31,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:31,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:31,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:31,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:15:31,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:31,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:31,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:31,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:31,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:31,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:31,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:15:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:31,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:31,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:32,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:32,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:32,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:15:32,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:15:32,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-29 12:15:32,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:32,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:32,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:15:32,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:32,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:15:32,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:32,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:15:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:32,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:32,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:32,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:33,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:33,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:15:33,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:15:33,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-29 12:15:33,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:33,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:33,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:15:33,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:33,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:15:33,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:33,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:15:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:33,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:33,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:33,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:33,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:33,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:15:33,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:15:33,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-29 12:15:33,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:33,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:33,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:15:33,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:33,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:15:33,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:33,898 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 124 proven. 291 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-29 12:15:33,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477164781] [2020-10-29 12:15:33,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:33,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 12:15:33,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934876631] [2020-10-29 12:15:33,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 12:15:33,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:33,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 12:15:33,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=641, Unknown=0, NotChecked=0, Total=702 [2020-10-29 12:15:33,900 INFO L87 Difference]: Start difference. First operand 263 states and 384 transitions. Second operand 27 states. [2020-10-29 12:15:34,952 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-10-29 12:15:35,719 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2020-10-29 12:15:35,878 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2020-10-29 12:15:37,012 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-10-29 12:15:37,179 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2020-10-29 12:15:37,382 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-29 12:15:37,584 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-10-29 12:15:37,900 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2020-10-29 12:15:38,467 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-29 12:15:38,693 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-29 12:15:39,368 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-29 12:15:41,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:41,502 INFO L93 Difference]: Finished difference Result 432 states and 729 transitions. [2020-10-29 12:15:41,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-29 12:15:41,503 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 108 [2020-10-29 12:15:41,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:41,509 INFO L225 Difference]: With dead ends: 432 [2020-10-29 12:15:41,509 INFO L226 Difference]: Without dead ends: 426 [2020-10-29 12:15:41,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=678, Invalid=5174, Unknown=0, NotChecked=0, Total=5852 [2020-10-29 12:15:41,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-10-29 12:15:41,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 294. [2020-10-29 12:15:41,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-10-29 12:15:41,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 452 transitions. [2020-10-29 12:15:41,571 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 452 transitions. Word has length 108 [2020-10-29 12:15:41,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:41,571 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 452 transitions. [2020-10-29 12:15:41,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 12:15:41,572 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 452 transitions. [2020-10-29 12:15:41,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 12:15:41,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:41,577 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 10, 5, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:41,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 12:15:41,577 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:41,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:41,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1520420156, now seen corresponding path program 11 times [2020-10-29 12:15:41,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:41,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170239393] [2020-10-29 12:15:41,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:41,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:41,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:42,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:42,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:43,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:43,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:46,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:46,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 12:15:46,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:15:46,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 12:15:46,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:46,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:46,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 12:15:46,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:15:46,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 12:15:46,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:46,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:46,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:46,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:46,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:46,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:46,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:15:46,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:46,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:46,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:46,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:46,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:46,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:46,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:15:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:46,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:46,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:47,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:47,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:47,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:15:47,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:15:47,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-29 12:15:47,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:47,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:47,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:15:47,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:47,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:15:47,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:47,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:15:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:47,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:47,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:47,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:48,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:48,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:15:48,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:15:48,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-29 12:15:48,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:48,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:48,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:15:48,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:48,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:15:48,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:48,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:15:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:48,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:48,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:48,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:48,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:48,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:48,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:48,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:15:48,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:15:48,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-29 12:15:48,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:48,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:48,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:15:48,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:48,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:15:48,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:48,710 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 117 proven. 301 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-29 12:15:48,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170239393] [2020-10-29 12:15:48,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:48,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 12:15:48,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842879701] [2020-10-29 12:15:48,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 12:15:48,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:48,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 12:15:48,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2020-10-29 12:15:48,712 INFO L87 Difference]: Start difference. First operand 294 states and 452 transitions. Second operand 24 states. [2020-10-29 12:15:51,000 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-29 12:15:53,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:53,188 INFO L93 Difference]: Finished difference Result 454 states and 776 transitions. [2020-10-29 12:15:53,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-29 12:15:53,189 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 108 [2020-10-29 12:15:53,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:53,194 INFO L225 Difference]: With dead ends: 454 [2020-10-29 12:15:53,194 INFO L226 Difference]: Without dead ends: 448 [2020-10-29 12:15:53,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=296, Invalid=3126, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 12:15:53,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-10-29 12:15:53,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 389. [2020-10-29 12:15:53,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-10-29 12:15:53,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 660 transitions. [2020-10-29 12:15:53,266 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 660 transitions. Word has length 108 [2020-10-29 12:15:53,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:53,266 INFO L481 AbstractCegarLoop]: Abstraction has 389 states and 660 transitions. [2020-10-29 12:15:53,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 12:15:53,266 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 660 transitions. [2020-10-29 12:15:53,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 12:15:53,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:53,275 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:53,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 12:15:53,276 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:53,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:53,276 INFO L82 PathProgramCache]: Analyzing trace with hash 702771706, now seen corresponding path program 12 times [2020-10-29 12:15:53,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:53,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683597611] [2020-10-29 12:15:53,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:53,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:53,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:53,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:54,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:57,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:58,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:58,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 12:15:58,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:15:58,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 12:15:58,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:58,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:58,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 12:15:58,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:15:58,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 12:15:58,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:58,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:58,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:58,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:58,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:58,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:58,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:15:58,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:58,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:58,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:58,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:58,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:58,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:58,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:15:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:58,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:58,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:58,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:58,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:58,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:15:58,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:15:58,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-29 12:15:58,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:58,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:58,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:15:58,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:58,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:15:58,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:59,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:15:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:59,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:59,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:59,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:59,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:59,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:15:59,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:15:59,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-29 12:15:59,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:59,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:59,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:15:59,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:59,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:15:59,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:59,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:15:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:59,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:59,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:59,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:59,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:59,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:15:59,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:15:59,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-29 12:15:59,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:59,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:59,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:15:59,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:59,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:15:59,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:00,531 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 114 proven. 309 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 12:16:00,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683597611] [2020-10-29 12:16:00,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:00,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 12:16:00,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118987757] [2020-10-29 12:16:00,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 12:16:00,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:00,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 12:16:00,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=746, Unknown=0, NotChecked=0, Total=812 [2020-10-29 12:16:00,533 INFO L87 Difference]: Start difference. First operand 389 states and 660 transitions. Second operand 29 states. [2020-10-29 12:16:00,932 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-29 12:16:01,524 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-29 12:16:02,787 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-29 12:16:03,592 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-29 12:16:06,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:06,022 INFO L93 Difference]: Finished difference Result 424 states and 694 transitions. [2020-10-29 12:16:06,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-29 12:16:06,023 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 108 [2020-10-29 12:16:06,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:06,027 INFO L225 Difference]: With dead ends: 424 [2020-10-29 12:16:06,027 INFO L226 Difference]: Without dead ends: 416 [2020-10-29 12:16:06,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=322, Invalid=3710, Unknown=0, NotChecked=0, Total=4032 [2020-10-29 12:16:06,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-10-29 12:16:06,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 381. [2020-10-29 12:16:06,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-10-29 12:16:06,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 647 transitions. [2020-10-29 12:16:06,096 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 647 transitions. Word has length 108 [2020-10-29 12:16:06,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:06,096 INFO L481 AbstractCegarLoop]: Abstraction has 381 states and 647 transitions. [2020-10-29 12:16:06,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 12:16:06,096 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 647 transitions. [2020-10-29 12:16:06,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 12:16:06,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:06,106 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 10, 5, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:06,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 12:16:06,107 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:06,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:06,107 INFO L82 PathProgramCache]: Analyzing trace with hash -815082180, now seen corresponding path program 13 times [2020-10-29 12:16:06,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:06,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668729065] [2020-10-29 12:16:06,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:06,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:06,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:06,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:06,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:06,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:07,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:07,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:08,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:09,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:09,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:09,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:10,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:10,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:11,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:11,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 12:16:11,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 12:16:11,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 12:16:11,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:11,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:11,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 12:16:11,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:16:11,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 12:16:11,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:11,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:11,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:11,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:11,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:11,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:11,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:16:11,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:11,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:11,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:11,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:11,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:11,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:11,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:16:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:11,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:11,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:11,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:11,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:11,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:11,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:16:11,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:16:11,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-29 12:16:11,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:11,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:11,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:16:11,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:11,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:16:11,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:12,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:16:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:12,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:12,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:12,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:12,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:12,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:16:12,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:16:12,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-29 12:16:12,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:12,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:12,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:16:12,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:12,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:16:12,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:12,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:16:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:12,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:12,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:12,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:12,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:16:12,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:12,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 12:16:12,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:12,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:12,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:16:12,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:12,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:16:12,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:13,386 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 118 proven. 303 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-29 12:16:13,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668729065] [2020-10-29 12:16:13,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:13,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 12:16:13,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677426122] [2020-10-29 12:16:13,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 12:16:13,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:13,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 12:16:13,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2020-10-29 12:16:13,388 INFO L87 Difference]: Start difference. First operand 381 states and 647 transitions. Second operand 27 states. [2020-10-29 12:16:14,974 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-29 12:16:15,253 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-29 12:16:15,726 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-29 12:16:15,932 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-29 12:16:17,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:17,993 INFO L93 Difference]: Finished difference Result 436 states and 727 transitions. [2020-10-29 12:16:17,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-29 12:16:17,999 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 108 [2020-10-29 12:16:18,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:18,005 INFO L225 Difference]: With dead ends: 436 [2020-10-29 12:16:18,005 INFO L226 Difference]: Without dead ends: 430 [2020-10-29 12:16:18,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 843 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=290, Invalid=3250, Unknown=0, NotChecked=0, Total=3540 [2020-10-29 12:16:18,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-10-29 12:16:18,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 389. [2020-10-29 12:16:18,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-10-29 12:16:18,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 672 transitions. [2020-10-29 12:16:18,073 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 672 transitions. Word has length 108 [2020-10-29 12:16:18,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:18,073 INFO L481 AbstractCegarLoop]: Abstraction has 389 states and 672 transitions. [2020-10-29 12:16:18,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 12:16:18,073 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 672 transitions. [2020-10-29 12:16:18,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 12:16:18,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:18,082 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:18,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 12:16:18,082 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:18,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:18,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1632730630, now seen corresponding path program 14 times [2020-10-29 12:16:18,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:18,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891283356] [2020-10-29 12:16:18,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:18,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:18,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:18,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:18,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:18,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:19,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:19,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:20,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:21,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:21,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:21,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:22,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:22,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:23,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:23,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 12:16:23,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 12:16:23,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:16:23,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:23,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:23,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 12:16:23,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:16:23,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 12:16:23,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:23,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:23,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:23,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:23,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:23,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:23,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:16:23,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:23,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:23,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:23,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:23,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:23,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:23,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:16:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:23,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:23,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:23,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:23,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:23,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:23,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:16:23,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:16:23,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-29 12:16:23,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:23,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:23,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:16:23,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:23,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:16:23,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:23,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:16:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:23,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:23,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:24,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:24,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:16:24,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:24,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-29 12:16:24,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:24,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:24,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:16:24,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:24,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:16:24,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:24,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:16:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:24,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:24,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:24,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:16:24,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:24,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:16:24,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:24,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:24,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:24,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:16:24,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:24,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:24,850 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 0 proven. 426 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-29 12:16:24,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891283356] [2020-10-29 12:16:24,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:24,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 12:16:24,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597579296] [2020-10-29 12:16:24,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 12:16:24,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:24,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 12:16:24,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=547, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:16:24,852 INFO L87 Difference]: Start difference. First operand 389 states and 672 transitions. Second operand 25 states. [2020-10-29 12:16:25,224 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-29 12:16:25,768 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-29 12:16:26,645 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-29 12:16:27,497 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-29 12:16:27,845 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-29 12:16:28,040 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-10-29 12:16:29,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:29,651 INFO L93 Difference]: Finished difference Result 719 states and 1090 transitions. [2020-10-29 12:16:29,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 12:16:29,653 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 108 [2020-10-29 12:16:29,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:29,658 INFO L225 Difference]: With dead ends: 719 [2020-10-29 12:16:29,658 INFO L226 Difference]: Without dead ends: 418 [2020-10-29 12:16:29,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=237, Invalid=2519, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 12:16:29,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-10-29 12:16:29,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 389. [2020-10-29 12:16:29,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-10-29 12:16:29,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 668 transitions. [2020-10-29 12:16:29,729 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 668 transitions. Word has length 108 [2020-10-29 12:16:29,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:29,730 INFO L481 AbstractCegarLoop]: Abstraction has 389 states and 668 transitions. [2020-10-29 12:16:29,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 12:16:29,730 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 668 transitions. [2020-10-29 12:16:29,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 12:16:29,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:29,738 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:29,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 12:16:29,739 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:29,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:29,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1648249348, now seen corresponding path program 15 times [2020-10-29 12:16:29,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:29,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180351255] [2020-10-29 12:16:29,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:29,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:29,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:30,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:30,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:30,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:32,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:34,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:34,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 12:16:34,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:16:34,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 12:16:34,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:34,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:34,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 12:16:34,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:16:34,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 12:16:34,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:35,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:35,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:35,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:35,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:35,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:35,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:16:35,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:35,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:35,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:35,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:35,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:35,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:35,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:16:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:35,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:35,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:35,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:35,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:35,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:16:35,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:16:35,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-29 12:16:35,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:35,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:35,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:16:35,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:35,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:16:35,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:35,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:16:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:35,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:35,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:35,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:36,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:36,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:16:36,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:16:36,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-29 12:16:36,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:36,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:36,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:16:36,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:36,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:16:36,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:36,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:16:36,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:36,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:36,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:36,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:36,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:36,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:16:36,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:16:36,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-29 12:16:36,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:36,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:36,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:16:36,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:36,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:16:36,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:36,885 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 124 proven. 291 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-29 12:16:36,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180351255] [2020-10-29 12:16:36,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:36,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 12:16:36,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889711725] [2020-10-29 12:16:36,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 12:16:36,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:36,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 12:16:36,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=724, Unknown=0, NotChecked=0, Total=812 [2020-10-29 12:16:36,887 INFO L87 Difference]: Start difference. First operand 389 states and 668 transitions. Second operand 29 states. [2020-10-29 12:16:37,448 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-29 12:16:37,904 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-29 12:16:38,070 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-10-29 12:16:38,249 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-10-29 12:16:38,502 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-10-29 12:16:38,930 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2020-10-29 12:16:39,174 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-10-29 12:16:39,685 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2020-10-29 12:16:40,406 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-10-29 12:16:40,570 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-29 12:16:40,816 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-29 12:16:41,057 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-29 12:16:41,237 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-29 12:16:42,434 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-29 12:16:42,643 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-29 12:16:44,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:44,864 INFO L93 Difference]: Finished difference Result 567 states and 1145 transitions. [2020-10-29 12:16:44,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-29 12:16:44,873 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 108 [2020-10-29 12:16:44,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:44,880 INFO L225 Difference]: With dead ends: 567 [2020-10-29 12:16:44,881 INFO L226 Difference]: Without dead ends: 561 [2020-10-29 12:16:44,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1361 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=715, Invalid=5137, Unknown=0, NotChecked=0, Total=5852 [2020-10-29 12:16:44,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2020-10-29 12:16:44,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 466. [2020-10-29 12:16:44,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-29 12:16:44,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 847 transitions. [2020-10-29 12:16:44,984 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 847 transitions. Word has length 108 [2020-10-29 12:16:44,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:44,985 INFO L481 AbstractCegarLoop]: Abstraction has 466 states and 847 transitions. [2020-10-29 12:16:44,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 12:16:44,985 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 847 transitions. [2020-10-29 12:16:44,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 12:16:44,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:44,996 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 7, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:44,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 12:16:44,997 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:44,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:44,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1390083910, now seen corresponding path program 16 times [2020-10-29 12:16:44,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:44,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593256352] [2020-10-29 12:16:44,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:45,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:45,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:45,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:46,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:47,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking...